PWM Splitter problems!

[RnRollie]

Similar issues arose (arisen?) when putting 4 SP120s on their OWN H100(i).
Although the waterblockpumpmodule has 4 PWM headers, it goes all tits up when attaching 4 SP120s

Not sure if it was with all SP120 or only with the SP120PerformanceEditions, thou.

Something in the PWM circuitery of the SP120 "gobbles up" the PWM signal.. probably a resistor or diode lacking somewhere or a "cheap shortcut" in the circuit.

Somebody should take them apart and compare the PWM circuit vs the PWM circuit in a Delta.

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[GTXJackBauer]

Yeah, Great find there Bustos!

I never really was a fan of the Corsair fans. I like Swiftech's Helix as my budget fans which I use on my rads and Noiseblocker eLoops B12 800-2000 PWM fans. If I had the cash, $250+ just for fans in push, I would have gone with the eLoops.

 

[skorpien]

Have you tried supplying the fans with 12V directly from the PSU? It's akin to what the MCP35X does with a 4-pin Molex supplying power and only tach and PWM wires connecting to mobo. It may be that the fans are drawing too much power from the H100i

 

[Bustos]

Relating back to the OP.

He says he only has 4 of the SP fans, which would still work with the Swiftech 8 way splitter. He just couldn't use the remaining 4 slots to maintain variable speeds.

According to the link, 5 or more, will have them running at full speed.

Whether it's a waste or his only option for fan splitters to work with his SP fans is something the OP will have to figure out.

Just saying...


EDIT: Although, I wonder, if u have 4 of the SP fans, would say 1,2,3 or 4 Helix fans still work at variable speeds in the remaining 4 slots...? Hmmm....(Morpheus pensive look after he asked Neo if that was air he was breathing)